feat: add Squid ceph release

Author: jackhodgkiss

roles/cephadm/vars/main.yml

@@ -7,5 +7,6 @@ cephadm_ceph_releases:
   - pacific
   - quincy
   - reef
+  - squid
 cephadm_apt_key_url: "https://download.ceph.com/keys/release.asc"
 cephadm_apt_key_path: "/usr/local/share/keyrings/ceph.asc"